[PEAK] The road to PyProtocols 1.0

[Phillip J. Eby]

At 01:59 PM 5/30/04 -0400, Bob Ippolito wrote:

>On May 30, 2004, at 1:43 AM, Phillip J. Eby wrote:
>
>>* Check if anybody's using the 'factory' argument to 'adapt()', and if 
>>not, get rid of it.
>>
>>* If 'factory' isn't used anywhere, consider ditching the second 
>>parameter passed to adapters.  That is, instead of calling 
>>'someadapter(ob,proto)', just call 'someadapter(ob)'.  This would give 
>>PyProtocols adapters the same calling signature as e.g. Zope adapters.
>
>I think I've used factory before, but I don't believe I've used the second 
>argument to adapters.  It wouldn't be a big deal if you removed factory, 
>since it can be emulated by defaulting to some token and checking for the 
>token after adaptation.

Yep, and the second argument to adapters can be emulated via closures or 
instances.  Effectively, the only reason the second argument is there is 
for symmetry with the 'factory' parameter, and the 'factory' parameter 
needs both so the default factory can raise a meaningful error message.  If 
'factory' goes away, then the last use case for the second argument goes 
away too.